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active.go
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active.go
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package pixel
import (
"errors"
"fmt"
"os"
"strconv"
"strings"
"github.com/BurntSushi/xgb/xproto"
"github.com/BurntSushi/xgbutil"
"github.com/BurntSushi/xgbutil/ewmh"
"github.com/BurntSushi/xgbutil/icccm"
)
const (
atomActiveWindow = "_NET_ACTIVE_WINDOW"
)
func getFocusedWindow(X *xgbutil.XUtil) (xproto.Window, error) {
// Get the currently focused window ID
activeWindow, err := ewmh.ActiveWindowGet(X)
fmt.Println(activeWindow)
if err != nil {
return 0, err
}
return activeWindow, nil
}
func getWindowPIDs(X *xgbutil.XUtil) (map[xproto.Window]map[string]interface{}, error) {
windowIDs, err := ewmh.ClientListGet(X)
if err != nil {
return nil, err
}
pidMap := make(map[xproto.Window]map[string]interface{})
for _, windowID := range windowIDs {
pid, err := ewmh.WmPidGet(X, windowID)
if err != nil {
return nil, err
}
className, instanceName, err := getWMClass(X, windowID)
if err != nil {
return nil, err
}
// Create a map to store window information
windowInfo := make(map[string]interface{})
windowInfo["PID"] = uint32(pid)
windowInfo["ClassName"] = className
windowInfo["InstanceName"] = instanceName
windowInfo["Window ID"] = windowID
// Append the activeWindow value to a text file
pidMap[windowID] = windowInfo
}
return pidMap, nil
}
func isInSlice(value string, slice []string) bool {
for _, v := range slice {
if v == value {
return true
}
}
return false
}
func getWMClass(X *xgbutil.XUtil, windowID xproto.Window) (string, string, error) {
// Get the WM_CLASS property
class, err := icccm.WmClassGet(X, windowID)
if err != nil {
return "", "", err
}
return class.Class, class.Instance, nil
}
func getActiveWindow(root xproto.Window) (xproto.Window, error) {
X, err := xgbutil.NewConn()
if err != nil {
fmt.Println(err)
os.Exit(1)
}
defer X.Conn().Close()
i := xproto.InternAtom(
x, true,
uint16(len(atomActiveWindow)),
atomActiveWindow,
)
a, err := i.Reply()
if err != nil {
return 0, err
}
// https://github.com/BurntSushi/xgb/blob/master/examples/get-active-window/main.go#L44
c := xproto.GetProperty(
x, false,
root, a.Atom,
xproto.GetPropertyTypeAny,
0, (1<<32)-1,
)
_, err = c.Reply()
if err != nil {
panic(err)
}
// Get the currently focused window
focusedWindow, err := getFocusedWindow(X)
if err != nil {
fmt.Println(err)
os.Exit(2)
}
if focusedWindow == 0 {
fmt.Println("No focused window found.")
os.Exit(3)
}
// Get window manager class of the focused window
className, instanceName, err := getWMClass(X, focusedWindow)
if err != nil {
fmt.Println(err)
os.Exit(4)
}
fmt.Println(className, instanceName)
classNames := []string{"konsole", "org.wezfurlong.wezterm", "Alacritty", "kitty"}
pids, err := getWindowPIDs(X)
if err != nil {
fmt.Println("Error getting window PIDs:", err)
}
fmt.Println("Window PIDs:", pids)
content, err := os.ReadFile("/tmp/pixel_output.txt")
trimmedContent := strings.TrimSpace(string(content))
windowID, err := strconv.ParseUint(trimmedContent, 10, 32)
if isInSlice(className, classNames) {
return xproto.Window(uint32(windowID)), nil
}
return 0, errors.New("Terminal Not Support")
}